depend:
<sudo apt-get install python-opencv>
options:
[sudo apt-get install python-numpy]

usage:
>>>from imglib.imgcomparison import isMatch, getMatchedCenterOffset, isMatchFromUrl
>>>isMatch('path_of_subimg','path_of_parentimg' , threshold=0.01)

test:
execute from shell:
$python imgcomparison.py

